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MRC HT-306 Operation Manual

All in one, rs232/usb humidity/temp. meter
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all in one, RS232/USB
HUMIDITY/TEMP.
METER
Model : HT-306
OPERATION MANUAL
Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 ,3
Your purchase of this
HUMIDITY/TEMP.
METER marks a step
forward for you into the
field
measurement.
Although this METER is
a complex and delicate
instrument, its durable
structure
many years of use if
p r o p e r
t e c h n i q u e s
developed. Please read
t h e
instructions
and always keep this
manual
reach.
mrc@mrclab.com
MRC. 12.24
of
precision
will
allow
o p e r a t i n g
a r e
f o l l o w i n g
carefully
within
easy

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Summary of Contents for MRC HT-306

  • Page 1 RS232/USB HUMIDITY/TEMP. METER Model : HT-306 Your purchase of this HUMIDITY/TEMP. METER marks a step forward for you into the field precision measurement. Although this METER is a complex and delicate instrument, its durable structure will allow...
  • Page 2 1. FEATURES * Humidity + Temperature + Dew point are combined into one meter, intelligent and professional. * 0.01 %RH resolution for the humidity reading, 0.01 degree resolution for the Temp. reading. * Pocket size, meter + humidity & temp. probe, all in one, easy operation.

  • Page 3: Specifications

    2. SPECIFICATIONS 2-1 General Specifications Circuit Custom one-chip of microprocessor LSI circuit. Display LCD size : 44 mm x 29 mm dual function LCD display. Measurement Humidity : %RH ( Relative Humidity ) Unit Temperature : ℃ ℉ Dew point : ℃...
  • Page 4 Power Current Approx. DC 4.6 mA. Weight 202 g/0.44 LB. * Battery is included. Dimension 204 x 60 x 33 mm, ( 8.0 x 2.4 x 1.3 inch ). Accessories Instruction manual......1 PC Included Humidity probe......1 PC Optional RS232 cable, UPCB-02 Accessories USB cable, USB-01 Data Acquisition software, SW-801-WIN...
  • Page 5 2-2 Electrical Specifications (23± 5 ℃ Humidity/ Temperature Range 10 % to 95 % R.H. Humidity Resolution 0.01 % R.H. Accuracy 70% RH : ≧ ± (3% reading + 1% RH). < 70% RH : ± 3% RH. Range to 50 to 122 ℃...

  • Page 6: Front Panel Description

    3. FRONT PANEL DESCRIPTION Fig. 1 3-1 Display 3-2 Power Button 3-3 Hold Button ( Esc Button ) 3-4 REC Button ( Enter Button ) 3-5 Function Button 3-6 Set Button 3-7 Battery Compartment/Cover 3-8 RS-232 Output Terminal 3-9 Probe 3-10 Probe head ( Humidity &...

  • Page 7: General Measuring Procedure

    4. GENERAL MEASURING PROCEDURE 4-1 Humidity and Temperature measurement 1)Power on the meter by pressing the " Power Button " ( 3-2, Fig. 1 ), the LCD shows the unit " %RH " & " " ℃ at the same time and measured value will show on the display ( upper display is Humidity value, the lower display is the temperature value ) .
  • Page 8 4-3 Data Hold During the measurement, press the " Hold Button " ( 3-3, Fig. 1 ) once will hold the measured value & the LCD will display a " HOLD " symbol. * Press the " Hold Button " once again will release the data hold function.

  • Page 9: Advanced Measuring Procedure

    5. ADVANCED MEASURING PROCEDURE Before executing advanced adjustment procedures, exit the " Hold function " and the Record " function. a. Hold the " Set Button " ( 3-6, Fig. 1 ) at least two seconds until the lower display show " COde ", then release the "...
  • Page 10 5-1 Change the Temp unit ℃ ℉ Use the " Set Button " to select the main function to " ", ℉ then one by one to press the " Function Button " ( 3-5, Fig. 1 ) a while will determine the default Temp. unit to ℃...

  • Page 11: Rs232 Pc Serial Interface

    After the function is determined, press the " Enter Button " ( 3-4, Fig. 1 ) to save the selection function into memory IC permanently. Press the " Esc Button " ( 3-3. Fig. 1 ) will revert to normal display screen. 6.
  • Page 12 The 16 digits data stream will be displayed in the following format : D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Each digit indicates the following status : Start Word When send the upper display data = 1 When send the lower display data = 2 D12, D11 Annunciator for Display = 01...

  • Page 13: Battery Replacement

    7. BATTERY REPLACEMENT 1)When the left corner of LCD display show " ", it is necessary to replace the battery. However, in-spec. measurement may still be made for several hours after low battery indicator appears before the instrument become inaccurate. 2)Slide the "...

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